What is this server crash report telling me?

[liamd2001]

hey guys I'm making a server for my mod pack right. ( http://www.technicpack.net/modpack/details/liamd2001s-original.367839 ) It keeps crashing with this report:

---- Minecraft Crash Report ----

// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

 

Time: 26/05/14 4:28 PM

Description: Exception in server tick loop

 

java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Unknown Source)

at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:462)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:201)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:181)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:112)

at cpw.mods.fml.common.Loader.loadMods(Loader.java:511)

at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99)

at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)

at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:92)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:634)

at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

... 30 more

Caused by: java.lang.RuntimeException: Attempted to load class bdd for invalid side SERVER

at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:51)

at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:274)

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:172)

... 32 more

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- System Details --

Details:

Minecraft Version: 1.6.4

Operating System: Windows 7 (x86) version 6.1

Java Version: 1.7.0_55, Oracle Corporation

Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

Memory: 746715768 bytes (712 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)

JVM Flags: 2 total; -Xmx1G -Xms1G

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Suspicious classes: FML and Forge are installed

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

CraftBukkit Information: 

   Running: 

   Failed to handle CraftCrashReport:

java.lang.NullPointerException

at org.bukkit.Bukkit.getName(Bukkit.java:72)

at org.bukkit.craftbukkit.v1_6_R3.CraftCrashReport.call(CraftCrashReport.java:19)

at net.minecraft.crash.CrashReportCategory.func_71500_a(CrashReportCategory.java:106)

at net.minecraft.crash.CrashReport.func_71504_g(CrashReport.java:58)

at net.minecraft.crash.CrashReport.<init>(CrashReport.java:40)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693)

at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

 

FML: ~~ERROR~~ NoClassDefFoundError: reifnsk/minimap/ReiMinimap

Profiler Position: N/A (disabled)

Is Modded: Definitely; Server brand changed to 'mcpc,craftbukkit,fml,forge'

Type: Dedicated Server (map_server.txt)

 

Does anyone know what this means?

thank you if you do....

[plowmanplow]

It means that you have not removed all of the client only mods from the mods folder.